COMPOSITAE 615 



37. A. lateriflorus (L.) Britton. (A. hirsuticaidis Lindl.). In dry 



or moist soil: N. S. to western Ont., south to N. Car., La. 

 and Tex. 



Throughout the range, except the pine-barrens, there unknown; 

 always increasing northward. Here taken to include four "or five 

 so called varietal forms. 



38. A. vimineus Lam. (A. vimineus foliolosus (Ait.) A. Gray). In 



moist soil: Ont. to Mass., Fla., Minn., Kan. and Ark. 



Throughout the range, except the pine-barrens, there only a rare 

 intruder. 



39. A. multiflorus Ait. In dry open places: Me. and Ont. to S. 



Dak., Ga. Tex., Ariz, and Mex. 



Conn. Common throughout, often replaced by the form known as 



A. exiguus (Fernald) Rydb. 

 N. Y. Throughout, but rare on S. I. 

 N. J. Recorded from Camden Co.; Monmouth, Middlesex, 



Hudson, Bergen, Warren and Hunterdon counties. 

 Pa. Apparently confined to Northampton and Bucks counties. 

 A rather scattered species whose distribution is not well under- 

 stood. 

 There seems to be no evidence that A. azurcus Lindl. has been correctly credited to 

 our area. A. talaricas L. f. has been collected in Conn, as an escape. A. Tripolium L. 

 has also been collected as a waif. 



16. Erigeron L. 



Heads 25-37 mm. broad; few. stem simple. I. E. pulchellus. 

 Heads 12-25 mm. broad, numerous; stem branched. 



Rays 100-150, mostly violet or purple. 2. E. philadelphicus. 

 Rays much less numerous, white, sometimes wanting. 



Stem-leaves lanceolate, nearly all sharply serrate. 3. E. annuus. 



Stem-leaves linear lanceolate, essentially entire. 4. E. ramosus. 



i. E. pulchellus Michx. On hills and banks: N. S. to Ont., S. 

 Dak., Fla. and La. 

 Throughout the range, except in the pine-barrens. 



2. E. philadelphicus L. In fields and swamps: throughout N. 



Am., except the extreme north. 



Local in nearly all parts of our range, except the coastal plain in 

 N. J., and on S. I.; apparently there wanting. 



3. E. annuus (L.) Pers In fields and along roadsides: N. S. to 



the N. W. Terr., south to Va., Ky., Kan. and Mo. Native of 

 Europe. 



Locally abundant as a weed except in the pine-barrens. 



